From: "tip-bot2 for Vincent Donnefort" <tip-bot2@linutronix.de>
To: linux-tip-commits@vger.kernel.org
Cc: Vincent Donnefort <vincent.donnefort@arm.com>,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
x86@kernel.org, linux-kernel@vger.kernel.org
Subject: [tip: sched/core] cpu/hotplug: Allowing to reset fail injection
Date: Wed, 03 Mar 2021 09:49:35 -0000 [thread overview]
Message-ID: <161476497509.20312.11412561789577463928.tip-bot2@tip-bot2> (raw)
In-Reply-To: <20210216103506.416286-2-vincent.donnefort@arm.com>
The following commit has been merged into the sched/core branch of tip:
Commit-ID: 6d06c515e9151dc858e391bd6bebce0b684eec4f
Gitweb: https://git.kernel.org/tip/6d06c515e9151dc858e391bd6bebce0b684eec4f
Author: Vincent Donnefort <vincent.donnefort@arm.com>
AuthorDate: Tue, 16 Feb 2021 10:35:04
Committer: Peter Zijlstra <peterz@infradead.org>
CommitterDate: Wed, 03 Mar 2021 10:33:00 +01:00
cpu/hotplug: Allowing to reset fail injection
Currently, the only way of resetting the fail injection is to trigger a
hotplug, hotunplug or both. This is rather annoying for testing
and, as the default value for this file is -1, it seems pretty natural to
let a user write it.
Signed-off-by: Vincent Donnefort <vincent.donnefort@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210216103506.416286-2-vincent.donnefort@arm.com
---
kernel/cpu.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 1b6302e..9121edf 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -2207,6 +2207,11 @@ static ssize_t write_cpuhp_fail(struct device *dev,
if (ret)
return ret;
+ if (fail == CPUHP_INVALID) {
+ st->fail = fail;
+ return count;
+ }
+
if (fail < CPUHP_OFFLINE || fail > CPUHP_ONLINE)
return -EINVAL;
next prev parent reply other threads:[~2021-03-03 14:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-16 10:35 [PATCH v2 0/3] cpu/hotplug: rollback and "fail" interface fixes vincent.donnefort
2021-02-16 10:35 ` [PATCH v2 1/3] cpu/hotplug: Allowing to reset fail injection vincent.donnefort
2021-03-02 9:01 ` [tip: sched/core] " tip-bot2 for Vincent Donnefort
2021-03-03 9:49 ` tip-bot2 for Vincent Donnefort [this message]
2021-03-06 11:42 ` tip-bot2 for Vincent Donnefort
2021-02-16 10:35 ` [PATCH v2 2/3] cpu/hotplug: CPUHP_BRINGUP_CPU failure exception vincent.donnefort
2021-03-02 9:01 ` [tip: sched/core] " tip-bot2 for Vincent Donnefort
2021-03-03 9:49 ` tip-bot2 for Vincent Donnefort
2021-03-06 11:42 ` tip-bot2 for Vincent Donnefort
2021-02-16 10:35 ` [PATCH v2 3/3] cpu/hotplug: Add cpuhp_invoke_callback_range() vincent.donnefort
2021-03-02 9:01 ` [tip: sched/core] " tip-bot2 for Vincent Donnefort
2021-03-03 9:49 ` tip-bot2 for Vincent Donnefort
2021-03-06 11:42 ` tip-bot2 for Vincent Donnefort
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